Ex 6.1,2 - Chapter 6 Class 9 Lines and Angles (Important Question)
Last updated at April 16, 2024 by Teachoo
Chapter 6 Class 9 Lines and Angles
Example 2
Important
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Class 9
Important Questions for Exam - Class 9
- Chapter 1 Class 9 Number Systems
- Chapter 2 Class 9 Polynomials
- Chapter 3 Class 9 Coordinate Geometry
- Chapter 4 Class 9 Linear Equations in Two Variables
- Chapter 5 Class 9 Introduction to Euclid's Geometry
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Chapter 6 Class 9 Lines and Angles
- Chapter 7 Class 9 Triangles
- Chapter 8 Class 9 Quadrilaterals
- Chapter 9 Class 9 Areas of parallelograms and Triangles
- Chapter 10 Class 9 Circles
- Chapter 11 Class 9 Constructions
- Chapter 12 Class 9 Herons Formula
- Chapter 13 Class 9 Surface Areas and Volumes
- Chapter 14 Class 9 Statistics
- Chapter 15 Class 9 Probability
Transcript
Ex 6.1, 2 In the given figure, lines XY and MN intersect at O. If ∠POY = 90° and a:b = 2 : 3, find c. Given a: b = 2 : 3 Let a = 2x & b = 3x, where x is some number Now, ∠ POX +∠ POY = 180° a + b + 90° = 180° a + b = 180° – 90° 2x + 3x = 90° 5x = 90° x = 90"°" /5 a = 2x b = 3x We need to find c, Since MN is a line, we can use linear pair ∠MOX + ∠XON = 180° b + c = 180° 54° + c = 180° c = 180° – 54° c = 126°
